circulation

1.[u]血液循环the movement of blood around the body

2.[u]传递；流传；流通the passing or spreading of sth from one person or place to another

3.[u]（某段时间的）社交活动，交际the fact that sb takes part in social activities at a particular time

4.[c][ususing]（报刊）发行量，销售量the usual number of copies of a newspaper or magazine that are sold each day, week, etc.

1.循环;运行

2.传播;环流(量),流通(量)

3.【航】环量,环流

4.(杂志等的)发行(额),销数,销路

5.通货,货币;流通证券

1.the continuous movement of blood around your body; the continuous movement of liquid, air, etc. inside a system or area

2.the number of copies of a newspaper or magazine sold each day, week, etc.

3.the process by which something such as money passes from one person to another